What are the full details for the current Free Shipping on Select Pre-Orders Valued at $79 or More promotion?

Official Rules: Offer valid on eligible products ordered from the Entertainment Earth web site between May 2, 2014 and December 31, 2017. Eligible products include select pre-orders as of May 2, 2014 valued at $79 or more before shipping charges that have no shipping restrictions. Free shipping credit applied to USA Domestic Super Saver FedEx SmartPost shipping only. Valid only on deliveries in the United States. Standard shipping time estimated to be 3-8 business days. Backorders will be issued for this offer. Not applicable to previously purchased merchandise. This offer does not apply to EE Distribution orders. This offer cannot be used with any other offer. Offer may be modified or cancelled at any time.